US2026002076A1PendingUtilityA1
Liquid crystal composition and liquid crystal display device
Est. expiryDec 9, 2042(~16.4 yrs left)· nominal 20-yr term from priority
C09K 2019/0466C09K 19/3491C09K 2019/301C09K 2019/3408G02F 1/134363G02F 1/1343C09K 19/12C09K 19/3066C09K 19/3028C09K 19/3003C09K 19/3098C09K 19/3405C09K 19/44C09K 2019/3027C09K 19/20C09K 19/3402C09K 2019/3004C09K 2019/3016C09K 2019/123C09K 2019/3422G02F 1/13C09K 19/42C09K 19/04C09K 19/00
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Claims
Abstract
The present invention provides a liquid crystal composition and a liquid crystal display device. The liquid crystal composition comprises at least one compound of general formula I and at least one compound selected from compounds of general formula II-1 and/or general formula II-2. The liquid crystal composition provided in the present invention has an appropriate optical anisotropy, an appropriate clearing point, a lower rotational viscosity, a higher K ave value and a higher ε ⊥ /Δε ratio, and has higher transmittance and contrast rate, and a remarkable low-temperature storage performance at the same time.
Claims
exact text as granted — not AI-modified1 .- 10 . (canceled)
11 . A liquid crystal composition comprising at least one compound of general formula I-1 and at least one compound selected from general formula II-1 and/or general formula II-2:
wherein, R 1 represents —H, C 1-12 halogenated or unhalogenated linear alkyl, C 3-12 halogenated or unhalogenated branched alkyl, C 1-12 halogenated or unhalogenated alkoxy, C 2-12 halogenated or unhalogenated alkenyl, C 2-12 halogenated or unhalogenated alkenoxy,
R 21 and R 32 each independently represents C 1-12 alkyl, C 1-12 alkoxy, C 2-12 alkenyl, or C 2-12 alkenoxy;
R 22 represents halogen atom, C 1-5 halogenated alkyl, C 1-5 halogenated alkoxy, C 2-5 halogenated alkenyl, or C 2-5 halogenated alkenoxy;
R 31 represents —H, C 1-12 alkyl, or C 1-12 alkoxy;
ring
represents
ring
ring
ring
and ring
each independently represents
one or at least two —CH 2 — in
can be replaced by —O—, one or at least two single bond in the rings can be replaced by double bond, and at least one single bond in the rings in at least one of ring
and ring
is replaced by double bond, at least one single bond in the rings in at least one of ring
and ring
is replaced by double bond;
L 1 and L 2 represent fluorine atom;
X 1 represents —O—;
X 2 represents —O— or —S—;
n 2 represents 0, 1, 2, 3 or 4;
percentage by weight of the compound of general formula I-1 is 0.1%-20%;
percentage by weight of the compound of general formula II-1 is 0.1%-20%;
percentage by weight of the compound of general formula II-2 is 0.1%-20%;
the liquid crystal composition further comprises at least one compound of general formula III:
wherein, R 2 represents C 1-12 linear alkyl, C 3-12 branched alkyl,
wherein one or at least two nonadjacent —CH 2 — in the C 1-12 linear alkyl, C 3-12 branched alkyl,
can each be independently replaced by —CH═CH—, —C≡C—, —O—, —CO—, —CO—O— or —O—CO—, and one or at least two —H in the C 1-12 linear alkyl and C 3-12 branched alkyl can each be independently replaced by —F or —Cl;
Z 2 represents single bond, —CH 2 CH 2 —, —CF 2 CF 2 —, —CO—O—, —O—CO—, —O—CO—O—, —CH═CH—, —CF═CF—, —CH 2 O— or —OCH 2 —;
X 3 represents —O— or —CH 2 —;
X 4 represents —F or —H; and
X 5 represents halogen atom, C 1-5 halogenated alkyl, C 1-5 halogenated alkoxy, C 2-5 halogenated alkenyl, or C 2-5 halogenated alkenoxy;
percentage by weight of the compound of general formula III is 0.1%-20%;
the liquid crystal composition further comprises a group of compounds consisting of at least one compound of general formula A-1 and at least one compound of general formula A-2:
wherein, R A1 and R A2 each independently represents C 1-12 linear alkyl, C 3-12 branched alkyl,
wherein, one or at least two nonadjacent —CH 2 — in the C 1-12 linear alkyl, C 3-12 branched alkyl,
can each be independently replaced by —CH═CH—, —C≡C—, —O—, —CO—, —CO—O— or —O—CO—, and one or at least two —H in the C 1-12 linear alkyl and C 3-12 branched alkyl can each be independently replaced by —F or —Cl;
ring
represents
wherein one or at least two —CH 2 — in
can be replaced by —O—; one or at least two single bond in the rings in
can be replaced by double bond; one or at least two —H on
can each be independently replaced by —F, —Cl or —CN, one or at least two —CH═ in the rings can be replaced by —N═;
ring
represents
wherein one or at least two —CH 2 — in
can be replaced by —O—, one or at least two single bond in the rings can be replaced by double bond; one or at least two —H on
can each be independently replaced by —F, —Cl or —CN, one or at least two —CH═ in the rings can be replaced by —N═;
ring
each independently represents
wherein one or at least two —CH 2 — in
can be replaced by —O—, one or at least two single bond in the rings in
can be replaced by double bond; one or at least two —H on
can each be independently replaced by —F, —Cl or —CN, one or at least two —CH═ in the rings can be replaced by —N═;
Z A11 , Z A21 and Z A22 each independently represents single bond, —CH 2 CH 2 —, —CF 2 CF 2 —, —CO—O—, —O—CO—, —O—CO—O—, —CH═CH—, —CF═CF—, —CH 2 O— or —OCH 2 —;
L A11 , L A12 , L A13 , L A21 and L A22 each independently represents —H, C 1-3 alkyl, or halogen atom;
X A1 and X A2 each independently represents halogen atom, C 1-5 halogenated alkyl, C 1-5 halogenated alkoxy, C 2-5 halogenated alkenyl or C 2-5 halogenated alkenoxy;
n A11 represents 0, 1, 2 or 3, wherein when n A11 represents 2 or 3, ring
can be the same or different, and Z A11 can be the same or different;
n A12 represents 1 or 2, wherein when n A12 represents 2, ring
can be the same or different; and
N A2 represents 0, 1, 2 or 3, wherein when n A2 represents 2 or 3, ring
can be the same or different, and Z A21 can be the same or different;
percentage by weight of the compound of general formula A-1 is 0.1%-20%;
in the liquid crystal composition, percentage by weight of the compound of general formula A-2 is 0.1%-20%;
the liquid crystal composition further comprises at least one compound of general formula M:
wherein, R M1 and R M2 each independently represents C 1-12 linear alkyl, C 3-12 branched alkyl,
wherein one or at least two nonadjacent —CH 2 — in the C 1-12 linear alkyl and C 3-12 branched alkyl can each be independently replaced by —CH═CH—, —C≡C—, —O—, —CO—, —CO—O— or —O—CO—;
ring
ring
and ring
each independently represents
wherein one or at least two —CH 2 — in
can be replaced by —O—; at most one —H on
can be replaced by halogen atom;
Z M1 and Z M2 each independently represents single bond, —CO—O—, —O—CO—, —CH 2 O—, —OCH 2 —, —C≡C—, —CH═CH—, —CH 2 CH 2 — or —(CH 2 ) 4 —; and
n M represents 0, 1 or 2, wherein when n M represents 2, ring
can be the same or different, Z M2 can be the same or different;
in the liquid crystal composition, percentage by weight of the compound of general formula M is 20%-80%.
12 . The liquid crystal composition according to claim 11 , wherein, in the liquid crystal composition, percentage by weight of the compound of general formula I-1 is 1%-10%.
13 . The liquid crystal composition according to claim 11 , wherein the compound of general formula II-1 is any one or the combination of at least two of the compounds with the following structures:
wherein, R 21 , R 31 and n 2 have the same protection scopes as those in claim 11 .
14 . The liquid crystal composition according to claim 11 , wherein, in the liquid crystal composition, percentage by weight of the compound of general formula II-1 is 1%-10%.
15 . The liquid crystal composition according to claim 11 , wherein the compound of general formula II-2 is any one or the combination of at least two of the compounds with the following structures:
wherein, R 22 and R 32 have the same protection scopes as those in claim 1 .
16 . The liquid crystal composition according to claim 11 , wherein, in the liquid crystal composition, percentage by weight of the compound of general formula II-2 is 1%-10%.
17 . The liquid crystal composition according to claim 11 , wherein, in the liquid crystal composition, sum of percentages by weight of the compounds of general formula II-1 and general formula II-2 is 0.1%-30%.
18 . The liquid crystal composition according to claim 17 , wherein, in the liquid crystal composition, sum of percentages by weight of the compounds of general formula II-1 and general formula II-2 is 1%-15%.
19 . The liquid crystal composition according to claim 11 , wherein, in the liquid crystal composition, percentage by weight of the compound of general formula III is 5%-15%.
20 . The liquid crystal composition according to claim 11 , wherein the liquid crystal composition further comprises at least one compound of general formula N:
wherein, R N1 and R N2 each independently represents C 1-12 linear alkyl, C 3-12 branched alkyl,
wherein one or at least two nonadjacent —CH 2 — in the C 1-12 linear alkyl and C 3-12 branched alkyl can each be independently replaced by —CH═CH—, —C≡C—, —O—, —CO—, —CO—O— or —O—CO—;
ring
and ring
each independently represents
wherein one or at least two —CH 2 — in
can be replaced by —O—, one or at least two single bond in the rings can be replaced by double bond; one or at least two —H on
can each be independently replaced by —F, —Cl or —CN, one or at least two —CH═ in the rings can be replaced by —N═;
Z N1 and Z N2 each independently represents single bond, —CO—O—, —O—CO—, —CH 2 O—, —OCH 2 —, —CH═CH—, —C≡C—, —CH 2 CH 2 —, —CF 2 CF 2 —, —(CH 2 ) 4 —, —CF 2 O— or —OCF 2 —;
L N1 and L N2 each independently represents —H, C 1-3 alkyl, or halogen atom; and
n N1 represents 0, 1, 2 or 3, n N2 represents 0 or 1, and 0≤n N1 +n N2 ≤3, wherein when n N1 represents 2 or 3, ring
can be the same or different, and Z N1 can be the same or different.
21 . The liquid crystal composition according to claim 20 , wherein the compound of general formula N is any one or the combination of at least two of the compounds with the following structures:
wherein, R N1 and R N2 have the same protection scopes as those in claim 20 .
22 . The liquid crystal composition according to claim 21 , wherein the compound of general formula N is any one or the combination of at least two of the compounds with the following structures:
wherein, R N1 and R N2 have the same protection scopes as those in claim 10 .
23 . The liquid crystal composition according to claim 20 , wherein, in the liquid crystal composition, percentage by weight of the compound of general formula N is 0.1%-20%.
24 . The liquid crystal composition according to claim 23 , wherein, in the liquid crystal composition, percentage by weight of the compound of general formula N is 2%-15%.
25 . The liquid crystal composition according to claim 11 , wherein the compound of general formula A-1 is any one or the combination of at least two of the compounds with the following structures:
wherein, R A1 represents C 1-8 linear alkyl, C 3-8 branched alkyl,
wherein one or at least two nonadjacent —CH 2 — in the C 1-8 linear alkyl and C 3-8 branched alkyl can each be independently replaced by —CH═CH—, —C≡C—, —O—, —CO—, —CO—O— or —O—CO—, and one or at least two —H in the C 1-8 linear alkyl and C 3-8 branched alkyl can each be independently replaced by —F or —Cl;
R v and R w each independently represents —CH 2 — and —O—;
v and w each independently represents 0 or 1;
L A11 , L A12 , L A11 ′, L A12 ′, L A14 , L A15 and L A16 each independently represents —H or —F;
L A13 and L A13 ′ each independently represents —H or —CH 3 ; and
X A1 represents —F, —CF 3 or —OCF 3 .
26 . The liquid crystal composition according to claim 11 , wherein, in the liquid crystal composition, percentage by weight of the compound of general formula A-1 is 4%-15%.
27 . The liquid crystal composition according to claim 11 , wherein the compound of general formula A-2 is any one or the combination of at least two of the compounds with the following structures:
wherein, R A2 represents C 1-8 linear alkyl, C 3-8 branched alkyl, wherein one or at least two nonadjacent —CH 2 — in the C 1-8 linear alkyl and C 3-8 branched alkyl can each be independently replaced by —CH═CH—, —C≡C—, —O—, —CO—, —CO—O— or —O—CO—, and one or at least two —H in the C 1-8 linear alkyl and C 3-8 branched alkyl can each be independently replaced by —F or —Cl;
L A21 , L A22 , L A23 , L A24 and L A25 each independently represents —H or —F; and
X A2 represents —F, —CF 3 , —OCF 3 or —CH 2 CH 2 CH═CF 2 .
28 . The liquid crystal composition according to claim 11 , wherein, in the liquid crystal composition, percentage by weight of the compound of general formula A-2 is 1%-10%.
29 . The liquid crystal composition according to claim 11 , wherein, in the liquid crystal composition, sum of percentages by weight of the compound of general formula A-1 and the compound of general formula A-2 is 0.1%-30%.
30 . The liquid crystal composition according to claim 11 , wherein the compound of general formula M is any one or the combination of at least two of the compounds with the following structures:
wherein, R M1 and R M2 have the same protection scopes as those in claim 11 .
31 . The liquid crystal composition according to claim 30 , wherein the compound of general formula M is any one or the combination of at least two of the compounds with the following structures:
32 . The liquid crystal composition according to claim 11 , wherein, in the liquid crystal composition, percentage by weight of the compound of general formula M is 40%-68%.
33 . A liquid crystal display device, wherein the liquid crystal display device comprises the liquid crystal composition of claim 11 .Cited by (0)
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